Lesser sand-eel, Raitt's Sandeel
- Group
- Fish
- Peak month
- December
- Records since 2000
- 32,762
Described in 1934
15 species
Opomyza petrei
- Group
- True flies
- Peak month
- July
- Records since 2000
- 929
Tinodes unicolor
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 548
Urophora jaceana
- Group
- True flies
- Peak month
- June
- Records since 2000
- 446
Geomyza balachowskyi
- Group
- True flies
- Peak month
- September
- Records since 2000
- 313
Hydroides ezoensis
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 154
Fannia subsimilis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 131
Bradysia regularis
- Group
- True flies
- Peak month
- October
- Records since 2000
- 104
Aeolothrips intermedius
- Group
- Other insects
- Peak month
- July
- Records since 2000
- 103
Megaselia hibernans
- Group
- True flies
- Peak month
- October
- Records since 2000
- 85
Megaselia tenebricola
- Group
- True flies
- Peak month
- October
- Records since 2000
- 81
Dixella martinii
- Group
- True flies
- Peak month
- June
- Records since 2000
- 63
Dark flour
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 60
Microniphargus leruthi
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 59
Chloriona vasconica
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 51